CNBC's Stock Pops & Drops From August 21

On CNBC's Fast Money, Karen Finerman said that Childrens Place (NASDAQ: PLCE) didn't increase guidance as much as she hoped, but she likes it and she still has a long position. Childrens Place spiked 7.79 percent Thursday and closed at $54.38.

Gogo (NASDAQ: GOGO) jumped 5.72 percent on the rumors of a deal with Verizon Communications(NYSE: VZ), explained Jon Najarian. He likes the service Gogo, but he doesn't like its speed. If Verizon can't help them improve on that, the stock is going to trade lower.

iDreamSky Technology (ADR) (NASDAQ: DSKY) gained 7.67 percent. Tim Seymour said he owns the stock and that he is staying long. He added that there is a lot of buzz in the space and iDreamSky is taking market share.

Guy Adami said that since beginning of 2011, every rally in Cliffs Natural Resources (NYSE: CLF) has been a selling opportunity and it appears to him that that is happening now. For investors who want to have a position in the basic materials space, Adami recommends Alpha Natural Resources (NYSE: ANR). Cliffs fell 3.11 percent.